Rock Crab

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A player in combat with multiple rock crabs.

Rock Crabs are aggressive monsters that look like harmless rocks while disguised, but attack when walked by. Unlike most other enemies and NPCs, Rock Crabs are not marked with yellow dots on the player's minimap; this is probably due to the crabs' appearance, which camouflages them as rocks.

Players can tell if a rock is a Rock Crab by looking at the rock's shape; Rock Crabs are tall oval shaped while normal rocks in their area are mostly in large clusters of shattered pieces. Another way to tell is by right clicking on them. If the text colour is yellow, it is a Rock Crab. If the text is blue, it is just a prop.

Rock Crabs become docile if the player has not left the surrounding area in a certain amount of time (roughly between ten and twenty-five minutes). To make the crabs aggressive again, exit the surrounding area (halfway to the entrance to the village in Rellekka, or by entering and exiting the entrance to Keldagrim) and enter again. You can also find one Rock Crab that will be aggressive, kill it then you can continue killing other crabs. As they are "dormant" until "awoken" by a passing player, rock crabs cannot be attacked until they are made aggressive once more.

Rock Crabs are excellent for training at all combat levels due to their low Defence and high Hitpoints, though low level players should consider bringing food. Rock Crabs used to be a popular melee training monster until the release of Sand Crabs, and the subsequent release of Ammonite Crabs, which are now more preferred options for training.

However, due to Sand Crabs being very crowded, some players choose to train on Waterbirth Island, as it has multiple convenient spawn locations where a player can stand still and always have 3-4 Rock Crabs attacking them at any moment, making it comparable to the experience rates of Sand Crabs. The player can simply reset the aggressiveness of the Rock Crab by running back to the boat to leave Waterbirth Island, then running back to their desired training spot.

Locations[edit | edit source]

Location Levels Members Spawns Map Trailblazer region
North of Rellekka13Member icon.png34MaplinkThis monster is in the Fremennik Trailblazer region. Fremennik
Waterbirth Island13Member icon.png19MaplinkThis monster is in the Fremennik Trailblazer region. Fremennik
West of Mount Quidamortem13Member icon.png28MaplinkN/A
Waterbirth Island Dungeon13Member icon.png18MaplinkThis monster is in the Fremennik Trailblazer region. Fremennik
Brine Rat Cavern13Member icon.png4MaplinkThis monster is in the Fremennik Trailblazer region. Fremennik

Rellekka Rock Crabs[edit | edit source]

The spot to avoid cannonading in Rellekka.

Note: Dwarf multicannons may be used here, unlike with the other types of crabs commonly used for training. This can make training for other players difficult. There is, however, a way to avoid the cannon's fire. If a player moves to the west-most part of the multi-combat zone, most cannon fire can be avoided. There are three rock crab spawns near this location, which makes it a decent spot. Although the cannon's fire can be avoided, it is best to switch to another world when faced with overcrowding.

Drops[edit | edit source]

The following drop rates are provided by Jagex, unless otherwise specified.

The average Rock Crab kill is worth 101.5.

Weapons[edit | edit source]

Item Quantity Rarity Price High Alch
Bronze pickaxe.png: Rock Crab drops Bronze pickaxe with rarity 6/128 in quantity 1Bronze pickaxe16/1281060
Iron pickaxe.png: Rock Crab drops Iron pickaxe with rarity 5/128 in quantity 1Iron pickaxe15/1284784

Seaweed[edit | edit source]

Item Quantity Rarity Price High Alch
Seaweed.png: Rock Crab drops Seaweed with rarity 4/128 in quantity 1Seaweed14/128371
Seaweed.png: Rock Crab drops Seaweed with rarity 4/128 in quantity 2Seaweed24/128742
Seaweed.png: Rock Crab drops Seaweed with rarity 2/128 in quantity 5Seaweed52/1281855
Edible seaweed.png: Rock Crab drops Edible seaweed with rarity 2/128 in quantity 2Edible seaweed22/1281062

Ores[edit | edit source]

Item Quantity Rarity Price High Alch
Tin ore.png: Rock Crab drops Tin ore with rarity 4/128 in quantity 3Tin ore34/1281833
Iron ore.png: Rock Crab drops Iron ore with rarity 2/128 in quantity 1Iron ore12/1285410
Coal.png: Rock Crab drops Coal with rarity 2/128 in quantity 2Coal22/12846654
Copper ore.png: Rock Crab drops Copper ore with rarity 2/128 in quantity 3Copper ore32/1281713

Oyster[edit | edit source]

Item Quantity Rarity Price High Alch
Oyster.png: Rock Crab drops Oyster with rarity 12/128 in quantity 2Oyster212/128172240
Oyster.png: Rock Crab drops Oyster with rarity 9/128 in quantity 1Oyster19/12886120
Empty oyster.png: Rock Crab drops Empty oyster with rarity 3/128 in quantity 1Empty oyster13/128Not sold3
Empty oyster.png: Rock Crab drops Empty oyster with rarity 1/128 in quantity 3Empty oyster31/128Not sold9
Oyster pearl.png: Rock Crab drops Oyster pearl with rarity 1/128 in quantity 1Oyster pearl11/1286667

Coins[edit | edit source]

Item Quantity Rarity Price High Alch
Coins_4.png: Rock Crab drops Coins with rarity 29/128 in quantity 4Coins429/12844
Coins_5.png: Rock Crab drops Coins with rarity 6/128 in quantity 8Coins86/12888
Coins_25.png: Rock Crab drops Coins with rarity 8/128 in quantity 36Coins368/1283636

Other[edit | edit source]

Item Quantity Rarity Price High Alch
This does not exist.NothingN/A19/128N/AN/A
Fishing bait.png: Rock Crab drops Fishing bait with rarity 2/128 in quantity 10Fishing bait102/1284010
Opal bolt tips.png: Rock Crab drops Opal bolt tips with rarity 2/128 in quantity 5Opal bolt tips52/12813520
Spinach roll.png: Rock Crab drops Spinach roll with rarity 1/128 in quantity 1Spinach roll11/128Not sold0
Casket.png: Rock Crab drops Casket with rarity 1/128 in quantity 1Casket11/12888530

Gem drop table[edit | edit source]

There is a 1/128 chance of rolling the gem drop table.

Item Quantity Rarity Price High Alch
This does not exist.NothingN/A1/256.47; Never[d 1]N/AN/A
Uncut sapphire.png: Rock Crab drops Uncut sapphire with rarity 1/512 in quantity 1Uncut sapphire11/512; 1/260[d 2]43415
Uncut emerald.png: Rock Crab drops Uncut emerald with rarity 1/1,024 in quantity 1Uncut emerald11/1,024; 1/520[d 2]67430
Uncut ruby.png: Rock Crab drops Uncut ruby with rarity 1/2,048 in quantity 1Uncut ruby11/2,048; 1/1,040[d 2]1,22960
Nature talisman.png: Rock Crab drops Nature talisman with rarity 1/5,461.33 in quantity 1Nature talisman11/5,461.33; 1/2,773.33[d 2]7752
Uncut diamond.png: Rock Crab drops Uncut diamond with rarity 1/8,192 in quantity 1Uncut diamond11/8,192; 1/4,160[d 2]2,630120
Loop half of key.png: Rock Crab drops Loop half of key with rarity 1/16,384 in quantity 1Loop half of key11/16,384; 1/8,320[d 2]10,44860
Tooth half of key.png: Rock Crab drops Tooth half of key with rarity 1/16,384 in quantity 1Tooth half of key11/16,384; 1/8,320[d 2]10,93460
Rune javelin.png: Rock Crab drops Rune javelin with rarity 1/16,384 in quantity 5Rune javelin51/16,384; 1/8,320[d 2]8401,200
Rune spear.png: Rock Crab drops Rune spear with rarity 1/262,144 in quantity 1Rune spear11/262,144; 1/15,600[d 2][d 3]11,98712,480
Shield left half.png: Rock Crab drops Shield left half with rarity 1/524,288 in quantity 1Shield left half11/524,288; 1/31,200[d 2][d 3]65,57666,000
Dragon spear.png: Rock Crab drops Dragon spear with rarity 1/699,050.67 in quantity 1Dragon spear11/699,050.67; 1/41,600[d 2][d 3]36,86937,440
  1. The "nothing" drop is removed while wearing a ring of wealth.
  2. 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 The drop rate is increased while wearing a ring of wealth due to the "nothing" drop being removed.
  3. 3.0 3.1 3.2 Only dropped if Legends' Quest has been finished; if not, a talisman is dropped instead.

Tertiary[edit | edit source]

Item Quantity Rarity Price High Alch
Clue scroll (elite).png: Rock Crab drops Clue scroll (elite) with rarity Always in quantity 1Clue scroll (elite)1Always[d 1]Not sold12
Reward casket (elite).png: Rock Crab drops Reward casket (elite) with rarity Always in quantity 1Reward casket (elite)1Always[d 1]Not sold30
Clue scroll (easy).png: Rock Crab drops Clue scroll (easy) with rarity 1/128 in quantity 1Clue scroll (easy)11/128Not sold12
  1. 1.0 1.1 Elite clue scrolls or elite caskets are only dropped when completing a elite cryptic clue asking the player to kill a Rock Crab.

See also[edit | edit source]